Attachable heel



G. SCHRADE.

Patented May 25, 1920.

PATENT. OFFICE,

GEORGE SCHRADE, or NEW YORK, n. Y.

ATTACHABLE HEEL.

Specification of Letters Patent.

Patented May 25, 1920.

Application filed January 23, 1919. Serial No. 272,695.

To all whom it may concern:

Be it known that I, ,GEORGE SCHRADE, a citizen of the United States,residing at New York, in the county and State ofNew York, have inventedcertain new and useful Improvements in Attachable Heels, of which thefollowing is a full, clear, and exact specification.

This invention relates to attachable heels for shoes and especiallyto-leather top lifts and means for attaching them to the shoes.

The invention contemplates the use of holding pins to be secured to theshoe and adapted to be engaged with socketsformed in the top lifts orattachable heel members with ease for'retaining the latter to the shoe.It is also the object of this invention to improve the construction orshape of the holding pins and sockets in the attachable member, wherebythey may not only be easily engaged with each other but when so engagedwill be effectively retained against accidental displacement. Anotherobject is to provide fora certain amount of compression or yielding ofsaid attachable member or top lifts without interference from theholding pins. Other objects will appear as the description proceeds.

The invention will be first hereinafter desimilar reference charactersare used to des-' ignate corresponding parts throughout the severalviews Figure 1 is a side elevation of a portion of a shoe showing partof the heel .in section to disclose the holding means for the attachablemember.

Fig. 2 is a section taken vertically through the attachable member,showing the shape of the sockets therein before the holding pins areinserted therein. i

Fig. 3 is a bottom plan view of the attaching plate which carries theholding pins.

Fig. 4 is a plan view of the attachable heel member. I

Fig. 5 is a detailed view in side elevation of one of the holding pinsas it appears before being riveted to the attaching late. 1 p Fig. 6 isa plan view of said pin.

Fig. 7 is an elevation of a punch such as may be used for forming thesockets in the attachable member, and

Fig. 8 is a plan view of said punch.

In the drawings the size of the holding pins with respect to the heel isexaggerated other material and have holes 16 for the passage of saidnails.

Depending from the plate 3 are one or more holding pins 4, each of whichhas a straight shank, a tapered flange 5 near its upper end, an enlargedhead 6 at its lower end, and a stud 8 at its extreme upper end which isriveted to the plate 3, as at 9, Fig. 1. The lower end or bottom surfaceof the head 6 of each pin is conical for guiding it into the socketwhich is provided to receive it in the attachable member.

Said attachable member is preferably composed of two layers or lifts ofleather which are glued or otherwise secured together, the lower layer14 being placed below the upper layer 10 as a wear piece so .as toprevent slight wear on the bottom of the heel from reaching the socketsand pins. The layer 10 is provided with sockets 11 to correspond to thepins 4;, each of said sockets having straight walls countersunk at thetop, as at 13, Fig. 2, and a conical bottom 1.2 to conform to theconical head of the pin which is inserted into said socket. The diameterof the straight walled portion ofeach socket is substantially the sameas the diameter of the straight shank of its pin, while the countersunkportion 13 corresponds in size to the flange 5 on the pin. Theadditional resisting surfaces presented by the flanges 5 prevent anoblong slot being formed by wear in the heel piece by the shank of eachpin, and the engagement of said flanges with the countersunk upper endportions 13 of the passages 11 firmly holds the heel member 10 in placebecause of the tendency to form a vacuum in said countersunk portionswhen the heel memher is drawn away from the plate 3 and said countersunkportions Wed away pin is slightly larger in diameter than the body ofthe socket and shank of the pin, the degree or amount of this differencebeing variable from'very little to a decided increase according to thetexture or density of the leather of which the attachable member ismade. This difference is such, however, that when the pin is driven intothe socket, which may be easily accomplished by a stamp of the foot orastroke of a hammer, the head of the pin does not break or tear thefibers of the leather in passing down through the body of the socket, sothat said fibers which are temporarily displaced during this operationwill return to normal position when moistened and fit closely around theshank ofthe pin, While the edge of the head of the pin will bite intosaid body of the socket or walls thereof and effectively retain theattachable member in place on the shoe, as illustrated in Fig. 1.

The sockets are preferably made somewhat deeper than the pins so thatwhen the member 10 is attached, as in Fig. 1, there will be a spacebetween the conical lower end of each of the pins and the conical bottom12 of its socket. This space is provided in order to allow forcompression of the member 10 when the weight of the body is placed onthe heel in walking without interference by the pins.

The countersunk upper end of each socket serves to guide the conicallower end of its pin easily into place, and the tapered flange 5 at theupper end of each pin adjacent the plate 3 p is designed to fit and fillsaid countersunk portion so as to prevent any play of the attachablemember on the pins. The sockets may be conveniently formed in theattachable member by using a punch such as is illustrated in Figs. 7 and8. This punch may be operated in a suitable press (not shown) and isformed at the lower end of its shank 17 with a beveled shoulder 20 tomake the countersunk portion 13, a straight portion 18 to form the body11 of the socket, and a conical tip 19 to form the conical bottom ofsaid socket. A suitable head 21 may be provided on the upper end of thepunch for retaining it in the press. Having thus described my invention,what I claim as new and desire to secure by Letters Patent of the UnitedStates is The combination with a shoe having depending pins securedthereto, each pin having a relatively long straight shank and anenlarged head at the end of the shank and provided with oppositelybeveled annular surfaces meeting in a sharp peripheral edge around saidhead, of a detachable surface member having straight-walled sockets toregister with said pins, said sockets being substantially the samediameter throughout as the shanks of the pins so that said peripheraledges will bite into the walls of the sockets when the surface member isat- I name to this specification.

GEORGE SGHRADE.

